Journal of Nanomaterials / 2011 / Article / Tab 1

Research Article

Particle Size Control of Y2O3:Eu3+ Prepared via a Coconut Water-Assisted Sol-Gel Method

Table 1

Crystallite size of the Y2O3:Eu3+-particles produced by proteic sol-gel as a function of pH and temperature (n.d. stands for not determined).

Without pH controlpH = 5.0pH = 7.0pH = 9.0

T = 350°Camorphousamorphous3 nmamorphous
T = 400°Camorphousamorphous4 nm6 nm
T = 450°C7 nm7 nm5 nm7 nm
T = 500°C9 nm9 nm18 nm n.d.
T = 850°C50 nmn.d.n.d.n.d.